Automatic safety valve to be used on water gauges



J. WALKER ET AL AUTOMATIC SAFETY VALVE TO BE USED ON WATER GAUGES Filed March 5 1925 Nov. 16 192s. 1,607,221

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"I a ['A 1 X 7 /9 I 1 C a 7 k 7 3n MQHH'OOS J Muller m Muller Patented Nov. 16, 1926.

UNITED STATES" PATENT OFFICE.

JOHN WALKER AND WESTON WALKER, OF BABRE, VERMONT, ASSIGNORS OF ONE- TI-IIIRD TO GEORGE E. MILLS, OF BARRE, VERMONT.

AUTOMATIC SAFETY VALVE TO BE USED ON WATER GAUGES.

Application filed March 5, 1925. Serial No. 13,177.

This invention relates to certain improvements in automatic gauge glass valves and it is an object of the invention to provide a device of this general character which operates to automatically seat or close upon breakage of the glass.

Another object of the invention is to provide a device of this general character with means whereby the valve member may be" readily applied in working position.

The invention consists in the details of construction and in the combination and arrangement of the several parts of our improved automatic gauge glass valve where-. by certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will'be hereinafter more fully set forth.

The novel features of our invention will hereinafter be definitely claimed.

In order that our invention may be the better understood, we will now proceed to describe the same with reference to the accompanying drawing, wherein Figure 1 is a view partlyin elevation and partly in section illustrating a gauge glass valve constructed in accordance with anv embodiment of our invention.

As disclosed in the accompanying drawings, A and A denote 'nipplesof desired di mensions having requisite communication with a boiler the upper nipple A being in communication with the steam arm 1 and the lower nipple A being in communication with the water arm 2. The connection between each of the nipples A and A with its coacting arm 1 or 2 is preferably through the medium of the coupling 3. Interposed between and coacting with the arms 1 and 2 in a conventional manner is the glass G and coacting with the arms 1 and 2 in a well known manner are the valves 4. e

As herein disclosed, each of the nipples A or A has its central or intermediate portion formed with a downwardly disposed and substantially V-shaped offset portion 5 the outer end of the bore of which being provided with an internal valve seat 6 with which is adapted to engage a valve member 7 preferably a ball. While this valve member or ball maybe made of any desired material we find it of essential advantage to form the same from copper. A wall of the portion 5 opposed to the leg a in which the valve member orball 7 operates is provided with an opening 8 of a diameter sufficient to permit the ready insertion or application of the valve member or ball 7 within the leg a. This opening 8 is normally closed by a plug 9 the outer end of which being provided with a hexagonal head 10 to facilitate the desired application or removal of the plug.

The inner face of the plug 9 has extended outwardlytherefrom and preferably at its axial center, a pin 11 which serves to limit the extent of movement of the valve member or ball 7 away from its seat G'so that it will be assured that such valvegmember at all times will be in a position for effective operation;

It isto be noted that the valve member or ball 7 is of a'diameter slightly less than the major diameter of the bore ofthe leg a in which it is arranged. This is particularly desirable in the lower nipple A as it permits sufficient passage of water in the' with our invention is particularly well adapted for use by reason of the conveni ence and facility with which it may be assembled and operated, and it will also be obvious that our invention is susceptible of some change and modification without departing from the principles and spirit thereof and for this reason we'do not wish to be understood as limiting ourselves to the precise arrangement and formation of the several parts herein shownin carrying out our invention in practice except as hereinafter claimed. I

We claim 1. A nipple for an arm of a gauge glass having anintermediate portion formed with a substantially V-shaped oifset,.the outer end of said ofiset being provided-with an internal valve seat, a valve member freely movable within the offset for coaction With the internal valve seat, a wall of said oflset being provided with an opening of a diameter to permit the passage of the valve member therethrough, and means for normally closing said opening.

2. A nipple for an arm of a gauge having an intermediate portion formed with I a substantially V-shaped offset, the outer end of said offset being provided with an internal valve seat, a valve member freely movable withm'the offset for co'actlon with ameter to permit the passage of the valve 15 member therethrongh, a plug for normally closing said openlng, and a member carried by the plug and extending inwardly of the offset toward the internal valve seat to limit the movement of the valve member away 20 from said seat.

1 JOHN WALKER.

WESTON WALKER. 

